Application: kaddressbook (4.4.3)
KDE Platform Version: 4.4.4 (KDE 4.4.4)
Qt Version: 4.6.3
Operating System: Linux 2.6.32-22-generic x86_64
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
That's pretty much it. It doesn't matter whether it's vcf 3 or vcf 2.1. I haven't tried multiple files yet as I need one big vcf file for importing it on my network server...

The crash can be reproduced every time.

 -- Backtrace:
Application: Adressbuch (kaddressbook), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f0c81c76780 (LWP 24313))]

Thread 2 (Thread 0x7f0c6d3dd710 (LWP 24316)):
#0  0x00007f0c7ee20f53 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f0c7a4584a9 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f0c7a4588fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f0c7f787406 in QEventDispatcherGlib::processEvents (this=0x1670220, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#4  0x00007f0c7f75c6c2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007f0c7f75ca9c in QEventLoop::exec (this=0x7f0c6d3dcd90, flags=) at kernel/qeventloop.cpp:201
#6  0x00007f0c7f66b8db in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#7  0x00007f0c7f73cdd8 in QInotifyFileSystemWatcherEngine::run (this=0x1655170) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f0c7f66df95 in QThreadPrivate::start (arg=0x1655170) at thread/qthread_unix.cpp:248
#9  0x00007f0c7d0349ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#10 0x00007f0c7ee2d6cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f0c81c76780 (LWP 24313)):
[KCrash Handler]
#5  QBasicAtomicInt::ref (this=0x7fffa3b8a040, copy=...) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86_64.h:121
#6  QString (this=0x7fffa3b8a040, copy=...) at ../../include/QtCore/../../src/corelib/tools/qstring.h:715
#7  QUrlPrivate (this=0x7fffa3b8a040, copy=...) at io/qurl.cpp:3382
#8  0x00007f0c7f719223 in QUrlPrivate::normalized (this=<value optimized out>) at io/qurl.cpp:3967
#9  0x00007f0c7f71a778 in QUrl::operator== (this=0x7fffa3b8a310, url=<value optimized out>) at io/qurl.cpp:5905
#10 0x00007f0c7e014ee0 in KDirModel::expandToUrl (this=0x2b4f890, url=<value optimized out>) at ../../kio/kio/kdirmodel.cpp:1085
#11 0x00007f0c711b4caa in KDirOperator::setCurrentItem (this=0x2b4e360, url=...) at ../../kfile/kdiroperator.cpp:1744
#12 0x00007f0c711caac9 in KFileWidgetPrivate::_k_slotLoadingFinished (this=0x2b0e440) at ../../kfile/kfilewidget.cpp:1513
#13 0x00007f0c711d6724 in KFileWidget::qt_metacall (this=0x2b12a60, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa3b8a5a0) at ./kfilewidget.moc:146
#14 0x00007f0c7f771036 in QMetaObject::activate (sender=0x2b4e360, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x6663762e) at kernel/qobject.cpp:3295
#15 0x00007f0c711b044c in KDirOperator::Private::_k_slotCanceled (this=0x2b50290) at ../../kfile/kdiroperator.cpp:2296
#16 0x00007f0c711bb445 in KDirOperator::qt_metacall (this=0x2b4e360, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa3b8a6d0) at ./kdiroperator.moc:247
#17 0x00007f0c7f771036 in QMetaObject::activate (sender=0x2b4f710, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x6663762e) at kernel/qobject.cpp:3295
#18 0x00007f0c7dffa358 in KDirListerCache::stop (this=0x2b444f0, lister=0x2b4f710, silent=false) at ../../kio/kio/kdirlister.cpp:378
#19 0x00007f0c7e004035 in ~KDirLister (this=0x7fffa3b8a040, __in_chrg=<value optimized out>) at ../../kio/kio/kdirlister.cpp:1938
#20 0x00007f0c7f76c88c in QObjectPrivate::deleteChildren (this=0x2b4f8b0) at kernel/qobject.cpp:1986
#21 0x00007f0c7f77396f in ~QObject (this=<value optimized out>, __in_chrg=<value optimized out>) at kernel/qobject.cpp:975
#22 0x00007f0c7f751085 in ~QAbstractItemModel (this=0x2b4f890, __in_chrg=<value optimized out>) at kernel/qabstractitemmodel.cpp:1373
#23 0x00007f0c7e012a0a in ~KDirModel (this=0x2b4f890, __in_chrg=<value optimized out>) at ../../kio/kio/kdirmodel.cpp:331
#24 0x00007f0c711b2c7c in ~Private (this=0x2b50290, __in_chrg=<value optimized out>) at ../../kfile/kdiroperator.cpp:358
#25 0x00007f0c711b2e1f in ~KDirOperator (this=0x2b4e360, __in_chrg=<value optimized out>) at ../../kfile/kdiroperator.cpp:430
#26 0x00007f0c711cc0ef in ~KFileWidgetPrivate (this=0x2b12a60, __in_chrg=<value optimized out>) at ../../kfile/kfilewidget.cpp:107
#27 ~KFileWidget (this=0x2b12a60, __in_chrg=<value optimized out>) at ../../kfile/kfilewidget.cpp:643
#28 0x00007f0c7f76c88c in QObjectPrivate::deleteChildren (this=0x29d9b70) at kernel/qobject.cpp:1986
#29 0x00007f0c80130c0d in ~QWidget (this=0x7fffa3b8aa30, __in_chrg=<value optimized out>) at kernel/qwidget.cpp:1476
#30 0x00007f0c7e0e0d71 in KFileDialogPrivate::getSaveUrl (dir=..., filter=<value optimized out>, parent=0x0, caption=..., options=<value optimized out>, selectedFilter=0x0)
    at ../../kio/kfile/kfiledialog.cpp:847
#31 0x00007f0c7e0e10f2 in KFileDialog::getSaveUrl (dir=..., filter=..., parent=0x6663762e, caption=...) at ../../kio/kfile/kfiledialog.cpp:813
#32 0x00007f0c80c1c4a0 in ?? () from /usr/lib/libkaddressbookprivate.so.4
#33 0x00007f0c80be752e in ?? () from /usr/lib/libkaddressbookprivate.so.4
#34 0x00007f0c80be7bc1 in ?? () from /usr/lib/libkaddressbookprivate.so.4
#35 0x00007f0c7f771036 in QMetaObject::activate (sender=0x1619f80, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x6663762e) at kernel/qobject.cpp:3295
#36 0x00007f0c7f775fb5 in QSignalMapper::mapped (this=0x7fffa3b8a040, _t1=<value optimized out>) at .moc/release-shared/moc_qsignalmapper.cpp:108
#37 0x00007f0c7f77724e in QSignalMapper::map (this=0x1619f80, sender=0x17151c0) at kernel/qsignalmapper.cpp:268
#38 0x00007f0c7f777480 in QSignalMapper::qt_metacall (this=0x1619f80, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa3b8b3e0) at .moc/release-shared/moc_qsignalmapper.cpp:87
#39 0x00007f0c7f771036 in QMetaObject::activate (sender=0x17151c0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x6663762e) at kernel/qobject.cpp:3295
#40 0x00007f0c800cda12 in QAction::triggered (this=0x7fffa3b8a040, _t1=false) at .moc/release-shared/moc_qaction.cpp:263
#41 0x00007f0c800cfa8b in QAction::activate (this=0x17151c0, event=<value optimized out>) at kernel/qaction.cpp:1255
#42 0x00007f0c80510691 in QMenuPrivate::activateCausedStack (this=<value optimized out>, causedStack=..., action=0x17151c0, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1002
#43 0x00007f0c80516222 in QMenuPrivate::activateAction (this=0x15aeda0, action=0x17151c0, action_e=QAction::Trigger, self=<value optimized out>) at widgets/qmenu.cpp:1094
#44 0x00007f0c8114bf2e in KMenu::mouseReleaseEvent (this=0x16e6950, e=0x2b552f0) at ../../kdeui/widgets/kmenu.cpp:471
#45 0x00007f0c80129f12 in QWidget::event (this=0x16e6950, event=0x7fffa3b8c030) at kernel/qwidget.cpp:8044
#46 0x00007f0c8051841b in QMenu::event (this=0x16e6950, e=0x7fffa3b8c030) at widgets/qmenu.cpp:2421
#47 0x00007f0c800d3c0c in QApplicationPrivate::notify_helper (this=0x15b4b60, receiver=0x16e6950, e=0x7fffa3b8c030) at kernel/qapplication.cpp:4302
#48 0x00007f0c800da8bb in QApplication::notify (this=0x7fffa3b8ccd0, receiver=0x16e6950, e=0x7fffa3b8c030) at kernel/qapplication.cpp:3867
#49 0x00007f0c8106f606 in KApplication::notify (this=0x7fffa3b8ccd0, receiver=0x16e6950, event=0x7fffa3b8c030) at ../../kdeui/kernel/kapplication.cpp:302
#50 0x00007f0c7f75dd9c in QCoreApplication::notifyInternal (this=0x7fffa3b8ccd0, receiver=0x16e6950, event=0x7fffa3b8c030) at kernel/qcoreapplication.cpp:726
#51 0x00007f0c800d9a9e in QCoreApplication::sendEvent (receiver=0x16e6950, event=0x7fffa3b8c030, alienWidget=0x0, nativeWidget=0x16e6950, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>, spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#52 QApplicationPrivate::sendMouseEvent (receiver=0x16e6950, event=0x7fffa3b8c030, alienWidget=0x0, nativeWidget=0x16e6950, buttonDown=<value optimized out>, lastMouseReceiver=<value optimized out>, 
    spontaneous=true) at kernel/qapplication.cpp:2967
#53 0x00007f0c8015a01d in QETWidget::translateMouseEvent (this=0x16e6950, event=<value optimized out>) at kernel/qapplication_x11.cpp:4314
#54 0x00007f0c801584ec in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffa3b8c950) at kernel/qapplication_x11.cpp:3513
#55 0x00007f0c801845a2 in x11EventSourceDispatch (s=0x15a8e70, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#56 0x00007f0c7a4548c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#57 0x00007f0c7a458748 in ?? () from /lib/libglib-2.0.so.0
#58 0x00007f0c7a4588fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#59 0x00007f0c7f7873b3 in QEventDispatcherGlib::processEvents (this=0x15767a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#60 0x00007f0c8018418e in QGuiEventDispatcherGlib::processEvents (this=0x7fffa3b8a040, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#61 0x00007f0c7f75c6c2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#62 0x00007f0c7f75ca9c in QEventLoop::exec (this=0x7fffa3b8cc80, flags=) at kernel/qeventloop.cpp:201
#63 0x00007f0c7f76173b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1003
#64 0x000000000040579d in _start ()

Reported using DrKonqi